Preemption of Streptococcus mutans 10449S colonization by its mutant 805
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چکیده
منابع مشابه
Bicarbonate and potassium regulation of the shape of Streptococcus mutans NCTC 10449S.
Morphological changes of S. mutans NCTC 10449S associated with growth in modified Jordan medium and FMC medium (Terleckyj et al., Infect. Immun. 11:649-655, 1975) were studied by scanning electron microscopy. The cells were bacillary in Jordan medium, but coccoid and of unequal size in FMC. Transfer of the cells from Jordan medium to FMC and vice versa reversed their shapes, as did salt exchang...
متن کاملpH regulation by Streptococcus mutans.
The intracellular pH (pHi) optimum for glycolysis in Streptococcus mutans Ingbritt was determined to be 7.0 by use of the ionophore gramicidin for manipulation of pHi. Glycolytic activity decreased to zero as the pHi was lowered from 7.0 to 5.0. In contrast, glycolysis had an extracellular pH (pHo) optimum of 6.0 with a much broader profile. The relative insensitivity of glycolysis to the lower...
متن کاملMalolactic fermentation by Streptococcus mutans.
Streptococcus mutans and certain other oral lactic-acid bacteria were found to have the ability to carry out malolactic fermentation involving decarboxylation of L-malate to yield L-lactic acid and concomitant reduction in acidity. The activity was inducible by L-malate in S. mutans UA159 growing in suspensions or biofilms. The optimal pH for the fermentation was c. 4.0 for both suspensions and...
متن کاملStreptococcus mutans and Streptococcus sanguinis colonization correlated with caries experience in children.
The aim of this study was to examine the colonization of Streptococcus mutans and Streptococcus sanguinis in the oral cavity and the association with severe early childhood caries (S-ECC). Saliva and plaque samples were collected from 14 S-ECC children and 8 caries-free (CF) children. All S-ECC children were S. mutans positive; 100% of CF children and 93% of S-ECC children were S. sanguinis pos...
متن کاملInhibition of ecological emergence of mutans streptococci naturally transmitted between rats and consequent caries inhibition by Streptococcus salivarius TOVE-R infection.
The ability of Streptococcus salivarius strain TOVE-R to inhibit the ecological emergence of virulent representatives of the most prevalent human mutans streptococci on the teeth of specific pathogen-free Osborne-Mendel rats was studied. Rats which were infected by TOVE-R, or either S. mutans 10449S or S. sobrinus 6715-13WT, or uninfected were transiently co-caged so as to allow natural fecal t...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1982
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.35.1.138-142.1982